named programs · 4 · from sources
What they call their work
Children's Habitat
Interactive space for children to explore nature, including the German Castle sculpture and nature walks
Community Events
Hosts seasonal public events such as Harvest Moon Celebration, wine and paint nights, and cocktail parties to engage the community
Educational Programs
Offers seminars and workshops on planting, pruning, and horticulture for adults and children
Public Access and Trails
Manages 42 acres of gardens, woodlands, and ponds open to the public with marked trails and seasonal displays
activities · 6 groups
What they do
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Horticultural Education and Community Gardening 1 activity
- Deliver educational programming and workshopsProvides annual community and educational programs, including seminars on planting, pruning, and cultivation for volunteers, as well as educational courses for children and families on topics ranging from bulb planting to etiquette. Organizes nature walks and interactive educational programs to engage the public.
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Agricultural Grantmaking and Funding Programs 1 activity
- Fund and support horticultural enrichment projectsAdministers and disburses gifts and grants to support special projects that enrich horticultural programming, including publications, special exhibits, educational workshops, and horticultural research programs at the Nassau County Bailey Arboretum.
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Event Venue Rental Services 1 activity
- Host public and private events at the arboretumOrganizes and hosts special public events such as the Harvest Moon Celebration, cocktail parties, and themed gatherings like wine and paint nights. Offers rental of the Bailey House and grounds for private events including outdoor wedding ceremonies and receptions, indoor meetings, and lectures, with capacity and duration varying by event type.
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Nature Preserve Management and Public Access 1 activity
- Operate and maintain the Bailey Arboretum propertyResponsible for the care and maintenance of the 42-acre Bailey Arboretum since 2006, including curated living tree collections, trails, gardens, ponds, and natural grounds. Maintains mature dawn redwood trees, including a specimen recognized by the International Metasequoia Society as having the largest girth in the world.
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Free Public Access Nature Sites 1 activity
- Provide public access and visitor programs at the arboretumOperates a publicly accessible arboretum with free admission and parking, offering year-round access to trails, gardens, and natural areas. Supports visitor engagement through photography, plein air painting, nature walks (especially for children), and a published calendar of events.
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Uncategorized 1 activity
- Manage photography and filming permitsIssues permits for professional photography and commercial filming at the arboretum, requiring a letter of intent for commercial use. Charges fees for photography permits based on event type and group size.
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financials · form 990 · fy2024
revenue
Total revenue$340K
Contributions & grants$219K65%
Program service revenue$2K0%
Investment income$86K25%
Other revenue$33K
expenses
Total expenses$352K
Program expenses80%
Admin / overhead16%
Fundraising4%
Salaries & benefits$171K
Grants paid out$0
Largest expense lineCompensation
balance sheet
Total assets$2.50M
Cash$260K
Investments$1.81M
Liabilities$11K
Net assets$2.49M
Liquid reserves70.4 mo
4 years on record · 2020–2024 · YoY revenue +0.2%
leadership · form 990 part vii · fy2024
Who runs it
paid leadership · 1
| Name | Title | Hours/wk | Compensation |
|---|---|---|---|
| MICHAEL MARON | SUPERINTENDENT | 40 | $91K |
board members · 12
- ANDREA VOLPE — PRESIDENT
- DAVID GOLON — VICE PRESIDENT
- DAWN GRESALFI — SECRETARY
- ELLEN MCPARTLAND — TRUSTEE
- JAN HAGNER — TRUSTEE
- JONATHAN SULLIVAN — TREASURER
- KEVIN CLOWE — TRUSTEE
- MARY WILLIAMS — TRUSTEE
- RICHARD WEIR — TRUSTEE
- SUSAN GIORDANO — TRUSTEE
- SUSAN MACKINNON — TRUSTEE
- THOMAS HOGAN — TRUSTEE
relationships · 7
Who they work with
- American Horticultural Society Garden Network Network — Member of the American Horticultural Society Garden Network, providing reciprocal benefits to members.
- Approved Vendors Partner — Requires use of approved vendors for catering, tenting, and valet services for events.
- Friends of Bailey Arboretum Network — Organizes and runs special events at Bailey Arboretum.
- International Metasequoia Society Network — Recognized the dawn redwood specimen at Bailey Arboretum as having the largest girth in the world.
- Nassau County Government — Bailey Arboretum is a Nassau County Park managed in partnership with the Friends of Bailey Arboretum.
- Nassau County Government — Manages the arboretum property under agreement with Nassau County, which owns the land donated in 1968.
- info@baileyarboretum.org Government — Email contact for permit requests and letters of intent related to photography and filming.
strategies · 3
How they approach the work
Named approaches extracted from this org’s sources. Where others share an approach, follow it to see the full set of orgs running it.
- Living Garden Museum Modelmethodology: living_garden_museumBy operating the arboretum as a living garden museum, the organization fosters horticultural education and public engagement with nature, because immersive, curated natural environments promote experiential learning and community connection to botanical conservation.
- Membership and Volunteer-Driven Programmingmethodology: community-supported_stewardshipBy funding maintenance and educational programs through memberships and volunteer participation, the organization sustains community investment and programmatic reach, because these models foster ownership, reduce operational costs, and deepen public engagement with horticulture.
- Public-Private Partnership for Park Stewardshipmethodology: public-private_partnershipBy managing a public county park through a private nonprofit structure, the organization enhances conservation and programming capacity, because this model enables flexible funding, volunteer integration, and mission-driven stewardship that complements public oversight.